Along the streets of Pittsburgh, people are bundled up. The frigid temperatures this winter have been something most have gotten used to, and Pittsburgh paramedics and emergency room doctors said that is clear.

LOOK AT THIS MESS ON PYRAMID AVENUE. PAN AMERICAN WATER TELLS US THEY HAVE CREWS ON THE SCENE AND ARE CLEANING UP THE MESS. AWFUL! YOU KNOW, THESE FREEZING TEMPERATURES, YOU WELL KNOW, CAN BRING ON FROST A BITE AND HYPOTHERMIA PRETTY QUICKLY. "ACTION NEWS" REPORTER MARCIE CIPRIANI SET OUT TO SEE WHAT FIRST RESPONDERS AND EMERGENCY ROOMS ARE SEEING. Reporter: MOST OF THE PEOPLE WE'VE BEEN SEEING OUT HERE TODAY HAVE ACTUALLY BEEN FAIRLY BUNDLED ONE THE HATS, THE GLOVES AND THE EXTRA LAYER OF CLOTHING, WHICH IS EXACTLY WHAT EMERGENCY ROOM DOCTORS AND PARAMEDICS SAY THEY'VE BEEN SEEING AS WELL. PITTSBURGH PARAMEDICS -- ARE YOU HURT? NO. Reporter: -- WHO ARE PREPARED FOR JUST ABOUT EVERYTHING, THESE EXTREME TEMPERATURES HAVE BEEN, WELL, SLOW. WE ACTUALLY HAD A VERY NICE DAY TODAY. IT'S BEEN RATHER QUIET. I WAS ACTUALLY KIND OF SURPRISED WITH THE COLD WEATHER. I THINK PEOPLE ARE HEEDING THE WARNINGS. Reporter: THE SAME SCENE INSIDE UPMC'S HOSPITAL. SO, WE ARE STILL SEEING FOLKS WHO, A COUPLE OF CASES OF FROSTBITE, WHERE THERE'S ACTUALLY INJURY TO THE TISSUES THEMSELVES. THERE HAS BEEN ONE CASE OF HYPOTHERMIA. Reporter: WHILE THOSE NUMBERS ARE CONSIDERED LOW, WITH THESE TEMPERATURES, DR. JOHN RIOTEN BERGER SAYS ANYONE WHO HAS TO GO OUTSIDE SHOULD KNOW WHAT THEY'RE LOOKING FOR TO DETERMINE WHETHER THE WEATHER IS AFFECTING THEM. YOU WILL FIRST START FEELING TIRED AND FATIGUED. YOU MAY HAVE SOME SLURRED SPEECH. YOU'RE GOING TO JUST WANT TO CURL UP AND TAKE A NAP. Reporter: HYPOTHERMIA COULD ULTIMATELY STOP YOUR HEART. ANY SIGN COULD BE A CALL TO 911. WE CAN REWARM YOU WITH HEAT PACKS, IF NECESSARY. WE UTILIZE BLANKETS, GET ANY COLD CLOTHING -- OR ANY WET CLOTHING OFF OF YOU. Reporter: AND GET YOU HERE TO THE ER. WHILE TODAY, EMERGENCY CALLS FOR COLD WERE LOW -- WE'RE PLEASANTLY SURPRISED. Reporter: -- DOCTORS AND MEDICS SAY THEY HAVE SEEN PLENTY THIS FRIGID WINTER. I HAVE ONE IN PARTICULAR WHOSE CORE TEMPERATURE IS DOWN TO 94. HE WAS EXTREMELY COLD, WET FROM LAYING IN THE SNOW OUTSIDE, AND IT WAS FROM JUST A TYPICAL EVENING OUT ON THE SOUTH SIDE. Reporter: EXPERTS SAY SIMPLY BEING RESPONSIBLE AND BUNDLING UP COULD SAVE YOUR LIFE WHILE THE TEMPERATURES ARE LOW. JUST ONE MORE BIT OF ADVICE FROM THE DOCTOR, JUST 10 TO 20 MINUTES OF EXPOSED SKIN AT ALL, EVEN THAT SKIN ON YOUR FACE,